1983 GMC pickup w/454

Dear AquaTune,We put one of your units on our 1980 Harley-Davidson. It ran so good we wanted before and after dyno reports and found that we had gained 4.5 hp and, in addition, 4.6 foot pounds of torque, also in addition to this, it greatly reduced the emissions. I was so excited with it that I put it on my 1983 GMC pickup w/454 and was amazed to find that I gained 5 more miles per gallon going from 9 mpg (at best) to a consistent 14 mpg, with a phenomenal increase in hp. And even with the lowest grade ga soline, no more pinging. Just a quick note to thank you again. I'm going to put a unit on all my rigs. Sincerely,